Polyaminomethylbenzyloxalamides and compositions and methods related thereto
The disclosure relates to oxygen scavenging polymers, compositions comprising the polymers, articles comprising the polymers and/or compositions, and methods of making the polymers, compositions, and/or articles. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
1. An oxygen scavenging composition comprising:
(a) a polyamide formed by the reaction of oxalic acid and/or oxalic halide with para-xylene diamine, wherein the oxalic acid and/or the oxalic halide, together with the para-xylene diamine comprise at least about 50% of the polyamide by mass, wherein the polyamide comprises at least one residue having a formula:
wherein n is greater than 5;
wherein each R 1 is CH 2 Ar 1 or Ar 1 ; and
wherein each Ar 1 is aryl substituted with 0, 1, or 2 groups independently selected from halogen, —OH, —CN, —N 3 , —NH 2 , C1-C4 alkyl, C1-C4 alkoxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, and C1-C4 dialkylamino;
(b) polyethylene terephthalate; and
(c) a transition metal in a positive oxidation state,
wherein the composition does not contain a nucleating agent.
2. The composition of claim 1 , wherein the polyamide has a molecular weight of at least about 10,000.
3. The composition of claim 1 , wherein the polyamide is present in an amount of from about 0.5 wt % to about 10 wt % based on the weight of the composition.
4. The composition of claim 1 , wherein the transition metal is cobalt.
5. The composition of claim 1 , wherein the at least one residue is present in an amount of about 1 wt % to about 10 wt %, based on the weight of the composition.
6. The composition of claim 1 , wherein cobalt is present in an amount of from about 10 ppm to about 400 ppm.
7. A method of making the composition of claim 1 , the method comprising the step of mixing the polyamide, polyethylene terephthalate, and cobalt.
8. An article of manufacture comprising the composition of claim 1 .
9. The composition of claim 1 , wherein the composition consists of:
(a) the polyamide;
(b) polyethylene terephthalate; and
(c) the transition metal.
10. The composition of claim 1 , wherein each said Ar 1 is phenyl substituted with 0, 1, or 2 groups independently selected from halogen, —OH, —CN, —N 3 , —NH 2 , C1-C4 alkyl, C1-C4 alkoxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, and C1-C4 dialkylamino.
11. The composition of claim 1 , wherein each said Ar 1 is phenyl substituted with 0, 1 group independently selected from halogen, —OH, —CN, —N 3 , —NH 2 , C1-C4 alkyl, C1-C4 alkoxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, and C1-C4 dialkylamino.
12. The composition of claim 1 , wherein each said Ar 1 is phenyl monosubstituted with a group independently selected from halogen, —OH, —CN, —N 3 , —NH 2 , C1-C4 alkyl, C1-C4 alkoxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, and C1-C4 dialkylamino.
13. The composition of claim 1 , wherein each said Ar 1 is unsubstituted phenyl.